<html>

    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <script src="http://www.amcharts.com/lib/3/amcharts.js"></script>
        <script src="http://www.amcharts.com/lib/3/gauge.js"></script>
        <!-- Export plugin includes and styles -->
        <script src="../export.js"></script>
        <link type="text/css" href="../export.css" rel="stylesheet">
        <style>
            body,
            html {
                height: 100%;
                padding: 0;
                margin: 0;
                overflow: hidden;
                font-size: 11px;
                font-family: Verdana;
            }
            
            #chartdiv {
                width: 100%;
                height: 100%;
            }
        </style>
        <script type="text/javascript">
            var chart = AmCharts.makeChart("chartdiv",
            {
                "type": "gauge",
                "titles": [
                {
                    "text": "Speedometer",
                    "size": 15
                }],
                "axes": [
                {
                    "startValue": 0,
                    "axisThickness": 1,
                    "endValue": 220,
                    "valueInterval": 10,
                    "bottomTextYOffset": -20,
                    "bottomText": "0 km/h",
                    "bands": [
                    {
                        "startValue": 0,
                        "endValue": 90,
                        "color": "#00CC00"
                    },
                    {
                        "startValue": 90,
                        "endValue": 130,
                        "color": "#ffac29"
                    },
                    {
                        "startValue": 130,
                        "endValue": 220,
                        "color": "#ea3838",
                        "innerRadius": "95%"
                    }]
                }],
                "arrows": [
                {}],
                "export":
                {
                    "enabled": true
                }
            });
            setInterval(randomValue, 2000);
            // set random value
            function randomValue()
            {
                var value = Math.round(Math.random() * 200);
                chart.arrows[0].setValue(value);
                chart.axes[0].setBottomText(value + " km/h");
            }
        </script>
    </head>

    <body>
        <div id="chartdiv"></div>
    </body>

</html>